renderDisplayTop example

$form['displays'] = [
      '#prefix' => '<h1 class="unit-title clearfix">' . $this->t('Displays') . '</h1>',
      '#type' => 'container',
      '#attributes' => [
        'class' => [
          'views-displays',
        ],
      ],
    ];

    $form['displays']['top'] = $this->renderDisplayTop($view);

    // The rest requires a display to be selected.     if ($display_id) {
      $form_state->set('display_id', $display_id);

      // The part of the page where editing will take place.       $form['displays']['settings'] = [
        '#type' => 'container',
        '#id' => 'edit-display-settings',
        '#attributes' => [
          'class' => ['edit-display-settings'],
        ],